1. Performance matrics : which of the following are terms used for performace matrics
answer : option e. All the above
2. Performance matrics : when looking at ROC/AUC curve, what are the values being compared represented on the x-axis and y-axis
answer : option a . False Positive Rate and True Positive Rate
3. Performance Matrics : If a model has an unclear precision or
recall value, what can be used to determine the model is good or
not?
Answer : Option
c. F1 score
4. Ridge Regression is represented as___ while Lesso Regression
is represented as ___
Answer Option
d. L2/L1
5. Which of the following statement are ture regarding Ridge
Regression?
Answer Option
c. Penalty selectively shrinks some
coefficients.
6. Which of the following statement are ture regarding Lasso
Regression?
Answer Option
e. All of the above
7. A key difference between Lasso and Ridge regression is that
Lasso regression allows you to.
Answer Option
c. Perform feature selection
8. What are different ways to train and test data?
Answer Option e. All of the above
9. what can go wrong is you tune hyperparameters using the test
set?
Answer . Option
c Can lead to overfitting the test set and the
generalization error measured will be accurate.
10. what does the K represents in K-fold cross validation?
Answer Option
a. Divide data into K parts
11. In performance metrics what does "accuracy" means?
Answer Option
e. None of the above.
12. Logistics Regression can be applied for binary
classification or multiclass classification?
Answer. Option
a True
13. Performance Metrics: What is accuracy?
Answer. Option
a The rate of all true positives and true negatives
over all the data.
14. Performance metrics: What is a good AUC score?
Answer Option
d. 0.9
Performance Metrics: Which of the following are terms used for performance metrics a. Specificity & Precision...
6. Calculate the following performance metrics for the confusion matrix shown below. * True positive rate. * True negative rate. + False positive rate. + False negative rate. + Precision. + Accuracy + Error rate. Actual class Positive Negative Positive 30 15 Predicted Class Negative 10 85
Based on the test set above, calculate the precision rate. Based on the test set above, calculate the recall rate. calculate the F1 measure. calculate the misclassification rate. 1-4. The table below shows the predictions made for a categorical target feature by a model for a test dataset. ID Target Prediction ID Target Prediction ID Target Prediction 8 true 1 false false 15 false false true 2 false 9 false false 16 false false false 3 false false 10 false...
Which of these is NOT true about the evaluation of decision tree performance? (A) Performance on the training dataset can overestimate performance on future data (B) Decision trees sometimes overfit the training data (C) Creating a test dataset simulates the model's performance on unseen data (D) The model's accuracy is unaffected by the rarity of the outcome.
Question 4 _(10 Marks) Assuming a total sample of 1079 persons, among which 520 persons are having autism and 559 are healthy persons. When we pass the data of 520 autism patients into the KNN classifier, it correctly predicted "220" patients as autism category and the remaining patients into healthy category. Similarly, from 559 healthy persons, the KNN categorize "100" as autism patients and the remaining as healthy persons. In the above scenario, if "autism" il considered as “positive class"...
Question 4 (10 Marks) Assuming a total sample of 1079 persons, among which 520 persons are having autism and 559 are healthy persons. When we pass the data of 520 autism patients into the KNN classifier, it correctly predicted “220” patients as autism category and the remaining patients into healthy category. Similarly, from 559 healthy persons, the KNN categorize “100” as autism patients and the remaining as healthy persons. In the above scenario, if “autism” is considered as “positive class”...
In a best practices model for evaluating supply chain performance, which of the following metrics reflect the goal of Improved Customer Order Fulfillment? a. Cash-to-cash b. Days of supply on hand c. Fill rate d. Customer survey
Question 1 2 pts Sensitivity and Specificity are plotted on an ROC Curve. True False Question 2 2 pts To obtain an honest estimate of future classification error, we use the classification matrix that is computed from validation data test data training data Question 3 2 pts The classification matrix, also called confusion matrix, gives estimates of the true classification and misclassification rates. True False Question 4 8 pts A data mining routine has been applied to a transaction dataset...
11. Local conditions can affect the specificity of an enzyme for its substrate, and thus the enzyme's catalytic activity. Which of the following alterations would be least likely to affect an enzyme in this manner? a) Increased temperature b) Increased substrate concentration c) increased H concentration d) Increased pH e) none of the above True / False: (3 pts each) 12. The Gl tracts of carnivores are longer and more specialized than those of herbivores. 13. Micelles are formed when...
your final answers to the Scantron Answer Sheet. 1. Which of the following processes are required for pregnancy and takes place in the first eight gestational days or less A. ovulation B. fertilization C. implantation D. all of the above E. choice A and B 2. The embryonic period initially starts in the first gestational week A. true B. false 3. Blood pregnancy test or human chorionic gonadotropin is positive in the 2nd gestational week A. true B. false 4....
All the answers please 5S. Which of the following are likely etiologies of avascular or aseptic necrosis: a. Decompression sickness b. Sickle cell disease c. Steroid use d. All of the above e. None of the above 56. Bulging of the intervertebral disc or rupturing of the annular fibrosus can lead to distal paraesthesia: a. True b. False 57. The ilium is part of the hip bone. a. True b. False 58. Open osseous fracture leads to osteomyelitis of the...